It just might serve as an incentive to not go for the head if the price you pay for it is a dislocated shoulder.

There should be a physical price to initiating contact - that's the natural internal rate governor in the process - and it's the one element that has been largely taken out of the game as we cocoon guys in the hockey equivalent of 12 air bags.

If you want to improve player safety, don't increase their armor, decrease it!